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24 lines (23 loc) · 1004 Bytes
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def shellSort(array: list):
"""Returns the array printed using the shell sort algorithm
>>> import random
>>> unordered_list = [i for i in range(10)]
>>> random.shuffle(unordered_list)
>>> shellSort(unordered_list)
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
"""
array_size = len(array)
# Break array in n/2, n/4, n/8 intervals
interval = array_size // 2
while interval > 0:
for middle_position in range(interval, array_size):
temp = array[middle_position]
middle_position_number = middle_position
while middle_position_number >= interval and array[middle_position_number - interval] > temp:
array[middle_position_number] = array[middle_position_number - interval]
middle_position_number -= interval
array[middle_position_number] = temp
interval = interval // 2
print(array)
if __name__ == "__main__":
shellSort([9, 8, 3, 7, 5, 6, 4, 1, 9, 8, 3, 7, 5, 6, 4, 1])